FTX 1225 Monitor is a two way compact speaker with a coaxial driver.
FTX 1225 Monitor is a closed-cabinet loudspeaker with driver of Celestion .
The kit is delivered with a Celestion FTX 1225 coaxial driver
The loudspeaker has been developed by Dennis Frank and Daniel Gattig.
The crossover consists of:
- a 3rd order high-pass filter (18 dB per octave slope) for the tweeter of the coaxial driver.
- a 3rd order low-pass filter (18 dB per octave slope) for the woofer of the coaxial driver.
The frequency response of this speaker is mostly linear.
The decay spectrum is nearly perfect.
At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 2% above 300 Hz and doesn't exceed 2% at 95 dB at 1 m between 300 and 15000 Hz.
the crossover components (right),
to be mounted on a small wooden board.
Kit without cabinet, price per speaker EUR 367,00 excl. VAT: € 308.40 / $ 357.75
The high-end kit is delivered with baked varnish air core coils on important parts of the crossover for minimizing microphonic effects. - The current flow through the coil creates a magnetic field which sets the reel of wire in motion. This motion induces a voltage in the coil which adds itself to the signal. The stiffer the reel of wire is, the less the signal will be altered. The capacitors for the fullrange driver are of type polypropylen (MKP) Clarity-Cap SA 630 and Clarity Cap PWA.
Kit with high-end-crossover without cabinet, price per speaker EUR 388,00 excl. VAT: € 326.05 / $ 378.22
If you want to use a valve amplifier with this speaker an impedance correction should be employed. In this case the component quality is less important; therefore, we offer only one kit (upon request higher quality components are available).
If you prefer to mount the crossover components on a universal PCB instead on wood
PCB 150x115 mm, tin plated, price per unit: EUR 4,70 excl. VAT: € 3.95 / $ 4.58
We recommend one board per kit (2 boards per speaker pair)